There are large amount of Morse signals of interest in shortwave environment. In order to reduce the workload of the related personnel, an automatic identification technique of Morse signals in shortwave narrowband channel is put forward. Based on analyzing the problems of Morse signal identification in short wave narrowband channel, a fast identification method combining with the characteristics of time and frequency domains is proposed and a new Morse signal identification process is designed. By using the proposed method, Morse signal can be identified very quickly with high identification probability, low leak alarm rate and false alarm rate.